A furious Novak Djokovic smashed a racket and tore his shirt in a shock 6-4 6-4 semifinal defeat to Roberto Bautista Agut at the Shanghai Masters. <br /> <br />The world No. 1 initially lost his cool when a stray backhand gifted Agut the first set, splintering his racket at the back of the court. <br /> <br />That was followed by the Serb ripping the neck of his shirt open after an attempted passing shot dropped into the net, giving Agut break point in the second set. <br /> <br />Djokovic received a time violation while changing into a new shirt, further incensing him and he was scathing in his criticism of umpire Carlos Bernardes after the match. <br /> <br />"He was the star of the show," Djokovic told reporters. "That's what he wanted to be today." <br /> <br />The 29-year-old, who has won in Shanghai three times, suggested fatigue played a part in his on-court outburst. <br />"There are definitely things that I need to regain from the emotional, mental point of view. <br /> <br />Read: Controversial Kyrgios fined for 'lack of effort' <br />"So I guess I'm focusing on that more. It's a transition somewhere in between, maybe just exhausted by the amount of matches I have had in the last 15 to 20 months. <br /> <br />"Maybe all in all that's the cause of me feeling this way. I had to experience this sooner or later. I knew I could not go on playing at the highest level for so many years all the time." <br /> <br />Djokovic's first ever defeat to Agut opened the door for Andy Murray to close the gap at the top of the world rankings.
